Molecular and physiological changes in maize (Zea mays) induced by exogenous NAA, ABA and MeJa during cold stress
Molecular and physiological changes in maize (Zea mays) induced by exogenous NAA, ABA and MeJa during cold stress
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DOI：
10.5735/085.045.0302
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发表时间：
2008-06-27
影响因子：
0.7
通讯作者：
Berber, Ismet
中科院分区：
文献类型：
--
作者：
Battal, Peyami;Erez, Mehmet E.;Berber, Ismet
用不同浓度的脱落酸（阿坝）、萘乙酸（NAA）和茉莉酸甲酯（MeJa）处理低温胁迫下的玉米植株。阿坝增强了植物对冰冻伤害的抵抗力。ABA处理的植物在低温下产生一些特异性蛋白质。在低温胁迫下，阿坝处理的叶片气孔大小和数量发生了显著变化。MeJa抑制根的生长，但增加根干重在冷锻炼。与对照相比，100 μ g ml（-1）NAA和50 μ g ml（-1）MeJa处理的叶绿素含量较低，而残留处理的叶绿素含量较高。类胡萝卜素含量在所有NAA和部分阿坝处理中均有所增加，而在MeJa处理中有所下降。外源MeJa处理提高了内源转玉米素（t-Z）和吲哚乙酸（IAA）的含量，而降低了阿坝的含量。外源NAA还能提高内源IAA、阿坝和玉米素核苷（ZR）的含量，而外源阿坝则降低内源IAA和ZR的含量。
Different concentrations of abscisic acid (ABA), naphthalene acetic acid (NAA) and methyl jasmonate (MeJa) were applied to maize (Zea mays) plants exposed to cold stress. ABA enhanced plant resistance against the damaging effects of freezing. ABA-treated plants produced some specific proteins when exposed to cold. Prominent changes were observed in the size and number of stomata with the application of ABA during cold stress. MeJa inhibited root growth, but increased root dry weight during cold acclimation. The chlorophyll content was lower at 100 mu g ml(-1) NAA and 50 mu g ml(-1) MeJa and higher in the residual applications when compared with that in the control plants. Carotenoid levels increased in all NAA and some ABA treatments, decreased however in MeJa treatment. Exogenous MeJa treatments increased endogenous trans-zeatin (t-Z) and indole-3-acetic acide (IAA) in contrast decreased ABA levels. Exogenous NAA also increased endogenous IAA, ABA and zeatin riboside (ZR) levels, while exogenous ABA decreased endogenous IAA and ZR levels.